// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
#define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_

#include "base/bind.h"
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/time/time.h"
#include "content/browser/cache_storage/cache_storage_scheduler_client.h"
#include "content/common/content_export.h"

namespace content {

// An operation to run in the CacheStorageScheduler. It's mostly just a closure
// to run plus a bunch of metrics data.
class CONTENT_EXPORT CacheStorageOperation {
public:
    CacheStorageOperation(
        const base::Closure& closure,
        CacheStorageSchedulerClient client_type,
        scoped_refptr<base::SingleThreadTaskRunner> task_runner);

    ~CacheStorageOperation();

    // Run the closure passed to the constructor.
    void Run();

    base::TimeTicks creation_ticks() const { return creation_ticks_; }
    base::WeakPtr<CacheStorageOperation> AsWeakPtr()
    {
        return weak_ptr_factory_.GetWeakPtr();
    }

private:
    void NotifyOperationSlow();

    // The operation's closure to run.
    base::Closure closure_;

    // Ticks at time of object creation.
    base::TimeTicks creation_ticks_;

    // Ticks at time the operation's closure is run.
    base::TimeTicks start_ticks_;

    // If the operation took a long time to run.
    bool was_slow_ = false;

    CacheStorageSchedulerClient client_type_;
    scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
    base::WeakPtrFactory<CacheStorageOperation> weak_ptr_factory_;

    DISALLOW_COPY_AND_ASSIGN(CacheStorageOperation);
};

} // namespace content

#endif // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
